New Defender's Study Bible Notes
21:14 book. The book of the wars of the Lord is one of several ancient books, now lost, that are cited in the Old Testament. See note on I Chronicles 29:29.
21:14 brooks of Arnon. The river Arnon and its tributaries, draining into the Dead Sea from the East, was at that time the disputed boundary between Moab and the Amorites.